[Rails] Rails3 beta4 + Ruby 1.9

When I try rails console using Rails3 beta4 and Ruby 1.9.1-p378 I
cannot save a record:

> rails console
Loading development environment (Rails 3.0.0.beta4)
ruby-1.9.1-p378 > g = Game.new
=> #<Game id: nil, player_id: nil, versus_id: nil, finished: nil,
created_at: nil, updated_at: nil>
ruby-1.9.1-p378 > g.save
NameError: undefined method `<=>' for class `ActiveSupport::Multibyte::Chars'

I found on someone's blog that exact error message and it said to use
1.9.2-head, know issue, etc. So with 1.9.2-head I can't even start
rails console:

> rails console
/Users/destiney/.rvm/gems/ruby-1.9.2-head/gems/railties-3.0.0.beta4/lib/rails/engine.rb:122:in
`delegate': wrong argument type Symbol (expected Proc) (TypeError)

Ruby 1.8.7 works fine as far as I can tell.

--
Greg Donald
destiney.com | gregdonald.com

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